Bone coring trephine



FIG. 1 is a right side perspective view of a bone coring trephine inaccordance with the present invention in receipt of an exemplaryinstrument;

FIG. 2 is a right side elevation thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear elevation thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side perspective view of an alternative embodiment ofthe bone coring trephine in accordance with an alternative embodiment ofthe present invention in receipt of an exemplary instrument;

FIG. 8 is a right side elevation thereof;

FIG. 9 is a from elevation thereof;

FIG. 10 is a rear elevation thereof;

FIG. 11 is a top plan view thereof; and,

FIG. 12 is a bottom plan view thereof.

The broken line showing of an instrument in FIGS. 1 and 7 representsenvironment. All other broken lines represent portions of the articlenot claimed. The broken lines form no part of the claimed design.

The bone coring trephine is shown with a symbolic break in its length,with the understanding that the portions of the device not shown in thedrawings form no part of the claim design.

CLAIM The ornamental design for a bone coring trephine, as shown anddescribed.